Grooved supporting fork for globes



Feb. 14, 1933. R. B LAW-[ON 1,89%.',580

GROOVED SUPPORTING OOOOOOOOOOO ES Patented Feb. 14, 1933 UNITED STATESPATENT OFFICE ROBERT B. LAWTON, OF CHICAGO HEIGHTS, ILLINOIS, ASSIGNORTO WEBER COSTELLO CO., OF CHICAGOv HEIGHTS, ILLINOIS, A CORPORATION OFILLINOIS GROOVED SUPPORTING FORK FOR GLOBES Application led .Tuly 8,1931. Serial No. 549,398.

The present invention relates to a globe and more particularly to animproved supporting fork which is rooved for the reception of a movableglo e carrying meridian whereby the axis of the globe may be quickly andconveniently adjusted at desired angles by means of graduations providedon the sides of the grooved supporting fork.

It is an object of this invention to provide an improved fork having agroove. provided in the inner peripheral surface thereof for thereception of a rotatable globe carrying meridian.

It is also an object of this invention to provide an improved groovedsupporting fork for a globe carrying meridian, said fork having degreemarks provided thereon extending in opposite directions from a Zero markto facilitate adjustment of the axis of the earth from zero up to231/20.

It is an important object of this invention to provide an improved andsimplified grooved supporting fork having degree gradnations on oppositesides thereof and also having means for coaction with a ilanged globecarrying meridian to prevent the ineridian from being disengaged fromthe fork when the meridian is rotatably adjusted with respect to thefork.

Other and further important objects of this invention will be apparentfrom the disclosures in the specification and the accompanying drawing.

The invention (in a preferred form) is illustrated in the drawing andhereinafter more fully described.

On the drawing:

Figure l is a front elevation of a globe which is rotatably supported ina meridian which in turn is rotatable in a grooved and graduatedmeridian supporting fork embodying the principles of this invention.

Figure 2 is an enlarged fragmentary sectional view taken on line II-IIof Figure l.

As shown on the drawing:

The 'reference numeral l indicates a pedestal or base having mountedthereon a supporting post or stand 2. Secured on the top of the post 2is a bracket or arm 3 having a fork and extends from one end of the forkto the other. Provided on each side of the for :'5 is a series ofgraduations or markings which extend in opposite directions from a Zerodegree mark up to 231/20 which indicates the inclination of the earthsaxis.

Seated in the fork groove 6 is a movable or rotatable meridian or ringt7 provided with an integral outer peripheral rim or flange 8 which isadapted to track in the fork groove 6. As clearly illustrated in Figure2 the screw 4e has the inner end thereof positioned to project inwardlyadjacent one side of the meridian 7 and to the inside of the meridianiiange 8 permitting rotation of the meridian but on t-he other handserving as a means for preventing the meridian from falling out or beingremoved from the supporting fork. Both sides of the meridian 'l' areprovided with degree graduations or markings.

Rotatably supported diametrically in the meridian 7 is an axis 9 onwhich a. globe l0 is supported.

It will be noted that the improved globe unit is provided with asupporting fork having a continuous groove therein extending from oneend to the other for receiving the globe carrying meridian the rim orflange of which slidably seats in the fork groove 6 between the sidelanges of the fork which form the groove 6. W ith the opposite sides ofthe fork provided with degree graduations ranging from zero in oppositedirections to 231/20 a convenient arrangement is provided whereby theaxis of the globe may be readily adjusted from a vertical position ofzero degree to varying inclinations from zero up to 231/20 on eitherside of the zero mark.

It Will of course be understood that various details of construction maybe varied through a Wide range Without departing from the principles ofthis invention and it is therefore not purposed to limit the patentgranted hereon otherwise than necessitated by the scope of the appendedclaims.

I claim as my invention:

l. A globe device comprising a base, a fork supported thereon and havingan inner peripheral groovel therein extending continuously from end toend of said fork, degree graduations provided on said fork, a meridia-nrotatably supported in said groove, and a globe rotatably supported insaid meridian, said meridian having graduations thereon in cooperativerelation With the graduations on the forl to facilitate accurateadjustment of inclination of the axis of the globe.

2. A globe device comprising a base, a fork supported thereon and havingan inner peripheral groove therein extending throughout the entirelength of the fork, said fork having degree graduations providedthereon, a meridian rotatably seated in said groove and havinggraduations thereon in cooperative relation with the graduations on thefork, a globe rotatably supported in said meridian, and means carried bythe fork for coaction With the meridian for obviating removal of themeridian from the fork. f 3. A globe device comprising a supporting forkhaving a continuous groove provided in the inner periphery thereof andeX- tending from end to end of the fork, graduated markings provided onthe fork, a globe carrying meridian rotatably supported in the groove ofsaid fork and having graduations thereon to permit the axis of the globeto be set in inclined positions of adjustment by means of thegraduations on said fork and on said meridian, and means carried by theforli for coaction With the meridian to obviate accidental removal ofthe meridian from the fork.

4. A globe device comprising a meridian ring having graduation markingsthereon, a globe supported in said meridian ring, a grooved stationarysupport for receiving the meridian ring, and graduations on said groovedstationary support to facilitate adj ustment of the inclination of theaxis of the globe.

In testimony whereof l have hereunto subscribed my name at Chicago, CookCounty,

illinois.

` ROBERT B. LAWTCN.

